x=int(input())
if x>=400 and x<600:
  print(8)
elif x>=600 and x<800:
  print(7)
elif x>=800 and x<1000:
  print(6)
elif x>=1000 and x<1200:
  print(5)
elif x>=1200 and x<1400:
  print(4)
elif x>=1400 and x<1600:
  print(3)
elif x>=1600 and x<1800:
  print(2)
elif x>=1800 and x<2000:
  print(1) x=int(input()) x int(input()) int input() input if x>=400 and x<600:
  print(8)
elif x>=600 and x<800:
  print(7)
elif x>=800 and x<1000:
  print(6)
elif x>=1000 and x<1200:
  print(5)
elif x>=1200 and x<1400:
  print(4)
elif x>=1400 and x<1600:
  print(3)
elif x>=1600 and x<1800:
  print(2)
elif x>=1800 and x<2000:
  print(1) x>=400 and x<600 x>=400 x 400 x<600 x 600 print(8) print 8 elif x>=600 and x<800:
  print(7) x>=600 and x<800 x>=600 x 600 x<800 x 800 print(7) print 7 elif x>=800 and x<1000:
  print(6) x>=800 and x<1000 x>=800 x 800 x<1000 x 1000 print(6) print 6 elif x>=1000 and x<1200:
  print(5) x>=1000 and x<1200 x>=1000 x 1000 x<1200 x 1200 print(5) print 5 elif x>=1200 and x<1400:
  print(4) x>=1200 and x<1400 x>=1200 x 1200 x<1400 x 1400 print(4) print 4 elif x>=1400 and x<1600:
  print(3) x>=1400 and x<1600 x>=1400 x 1400 x<1600 x 1600 print(3) print 3 elif x>=1600 and x<1800:
  print(2) x>=1600 and x<1800 x>=1600 x 1600 x<1800 x 1800 print(2) print 2 elif x>=1800 and x<2000:
  print(1) x>=1800 and x<2000 x>=1800 x 1800 x<2000 x 2000 print(1) print 1 x=int(input()) int(input()) x
x=int(input())
if x>=400 and x<600:
  print(8)
elif x>=600 and x<800:
  print(7)
elif x>=800 and x<1000:
  print(6)
elif x>=1000 and x<1200:
  print(5)
elif x>=1200 and x<1400:
  print(4)
elif x>=1400 and x<1600:
  print(3)
elif x>=1600 and x<1800:
  print(2)
elif x>=1800 and x<2000:
  print(1)